The FIA WEC calendar is set to see major changes from next season, running in the winter across 2018-19 in what's being referred to as an 18-month-long "super season."

The major headline is the return of the Sebring 12 Hours to the calendar for the first time since the inaugural WEC season in 2012 (pictured below). Unlike five years ago, the race will be run as a second 12-hour race after the IMSA Mobil 1 12 Hours of Sebring, on the same weekend. It will start at midnight after the conclusion of IMSA's 12 hours.

Of the current selection of the circuits, five do not feature on the bill: Silverstone, Circuit of The Americas, Mexico City, Bahrain and Nurburgring.

Meanwhile, the 24 Hours of Le Mans and WEC 6 Hours of Spa-Francorchamps feature on the schedule twice, at the beginning and the end of the extended championship, with Le Mans closing the championship each year. Fuji and Shanghai, the series' traditional Asian rounds, retain their traditional slots.

The eight-race calendar is not complete; there's still a "TBC" in the middle of the season for the race scheduled for February 2019.

Nevertheless, with the confirmed rounds on the calendar, the WEC will visit three continents, and therefore retain its world championship status.

In terms of points, Le Mans and Sebring will not be double-points rounds, but they will feature enhanced points, yet to-be-announced.

Finally, the-season Prologue Test – which this year was held at Monza – will return to Paul Ricard.

"We would like to sincerely thank Jean Todt, president of the FIA and Sir Lindsay Owen-Jones, president of the Endurance Commission and all the commission members for their support. Many decisions, essential for the future of the WEC, have been made in record time," Automobile Club de l'Ouest (ACO) President Pierre Fillon said.

"With the support of the WEC's friends and partners at IMSA, agreement has been reached to return to Sebring with the 12 Hours of Sebring in the WEC calendar and we are really delighted about this."

Jean Todt added: "I am delighted with the new schedule and the changes to the WEC championship that will allow this great discipline within motorsport to make a fresh start."